1. Scope and Purpose
1.1
This Standard applies to the design, installation, operation, and maintenance
of those portions of a hospital electrical system in which the interruption of
the normal supply would jeopardize the effective and safe care of its patients,
the safety of hospital staff, and the public.
1.2
This Standard includes requirements for the installation of a hospital…
Chemical products for industrial use — Sampling techniques — Solid chemical products in the form of ...
From the lot to be sampled a certain number of increments is taken. The increments are mixed to form either a bulk sample or several primary samples, depending on the purposes of the sampling. By means of replicate reductions a reduced sample is prepared from the bulk sample or from each primary sample, then several laboratory samples, each stage of the division being preceded in each case by…
Soils - Moisture-Density Relations Modified Proctor Test
The present standard describes the method to determine the relation between the
moisture content and the density of soils and soil aggregates when these are
compacted in standard moulds using 4,54 kg rammers dropped a height of 457 mm.
Four methods are described herein.
NOTE 1 - The laboratory compaction tests described in this standard generally
provide good measures of optimum moisture…
Specifies the method used to determine the in place density of soils using a
standardized sand to measure the volume of the test hole. The use of the
apparatus described herein is limited to the testing of soils containing
particle sizes no greater than 56 mm in diameter. For soils containing
particles greater than 56 mm in diameter, a larger apparatus of similar
proportions must be used.
Propylene for industrial use — Determination of oligomers — Gas chromatographic method
A liquid sample obtained at low temperature is vaporized and then passed through a chromatographic column which permits the separation of the oligomers. The detection is performed by flame ionization an the peaks obtained are compared with those derived from an external standard. The method is applicable to propylene having propene dimers (hexenes) contents greater than 20mg/kg and propene…
Butadiene for industrial use — Determination of active tert-butyl-catechol (TBC) (4- (1,1- dimethyle...
The active TBC in a test portion is extracted by mixing with a solution containing m-nitrophpenol (as the internal standard) and evaporating the butadiene. The TBC and m-nitrophenol are separated by high-performance liquid chromatography and detected by UV: The peak areas or peak heights are measured and the TBC content is determined by using a calibration graph. The polymerization inhibitor TBC…
Oil of cedarwood, Texas (Juniperus mexicana Schiede)
The Standard specifies the following characteristics of the oil. Appearance: Viscous liquid. Colour: Brown to reddish brown. Odour: Characteristic. Relative density at 20/20 °C: 0,952 - 0,966. Refractive index at 20 °C: 1,5050 - 1,5080. Optical rotation at 20 °C: Range from - 50 to - 32 . Miscibility with 90 % (V/V) ethanol at 20 °C: 1 : 5. Alcohols content, expressed as cedrol: 35 - 48 % (m/m).…
Directives for fixing asbestos-cement corrugated and asymmetrical section sheets and fittings for ro...
Gives guidelines for design, laying and fixing, and maintenance of roofs of asbestos-cement corrugated or asymmetrical section sheets. Is applicable to the conditions most often found on buildings, wherever they are sited. For special or exceptional laying conditions, particular instructions, additional to those given in this Standard, are required.
Hydraulic fluid power — Filters — Statement of requirements
A statement of requirements (SOR) is defined as a document to be provided by a user to specify his requirements to a manufacturer. A model SOR is described to enable a user to define his requirements fully, without ambiguity and in standard form so that the supplier can meet the requirements as accurate as possible. Annex A contains a standard form for a SOR, annex B shows clearances.
